Παραπομπή APA

Soars, J., & Soars, L. (1991). Headway - Pre-intermediate: Teacher's book. Oxford: Oxford University Press.

Παραπομπή Chicago Style

Soars, John, και Liz Soars. Headway - Pre-intermediate: Teacher's Book. Oxford: Oxford University Press, 1991.

Παραπομπή MLA

Soars, John, και Liz Soars. Headway - Pre-intermediate: Teacher's Book. Oxford: Oxford University Press, 1991.

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